What is a Hot Air Balloon Made of?

A hot air balloon is divided into three main parts: the balloon itself (which we call the envelope), the basket, and the burner system. The envelope can be made of either polyester or specially reinforced nylon. The fabric has properties that keep the heat inside the balloon, while the balloon’s supporting structure is a large network of strong so-called load tapes, around which the fabric is sewn. The balloon basket is woven from willow, but the supporting structure consists of oak planks and strong steel cables, which are connected to the balloon. The willow weaving has the great advantage of being flexible and strong, making it very suitable for the balloon’s landings. The burner system consists of gas cylinders, hoses, and a large burner that can be activated and, when the gas is burned, can send heat up into the balloon during the flight.